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US20070044982 Ebb-and-flow drain and fluid-handling system  
The present invention provides an ebb-and-flow fluid handling system and drain and tank assembly. The system allows continuous and periodical flushing of the total volume of fluid in a tank, while...
US20110240323 VIBRATORY MECHANISM FOR A PILE DRIVER AND A PILE DRIVER  
A vibratory mechanism for a pile driver com-prises a static part and a dynamic part. The dynamic part is movable with respect to the static part. The static part is provided with a drivable...
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